1561061270983 has 8 divisors (see below), whose sum is σ = 1611625113216. Its totient is φ = 1510510368000.

The previous prime is 1561061270981. The next prime is 1561061271023. The reversal of 1561061270983 is 3890721601651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1561061270983 - 2¹ = 1561061270981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561061270981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2989318 + ... + 3472483.

It is an arithmetic number, because the mean of its divisors is an integer number (201453139152).

Almost surely, 2^{1561061270983} is an apocalyptic number.

1561061270983 is a deficient number, since it is larger than the sum of its proper divisors (50563842233).

1561061270983 is an equidigital number, since it uses as much as digits as its factorization.

1561061270983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6469625.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 1561061270983 in words is "one trillion, five hundred sixty-one billion, sixty-one million, two hundred seventy thousand, nine hundred eighty-three".